Actvalve Inc. Offers Tight Shut Off Type Actuated Butterfly Valve. Actvalve Inc. Supplies engineering equipments. Tight Shut Off Type Actuated Butterfly Valve is a wafer type or flanged type valve. Tight Shut Off Type Actuated Butterfly Valve is available with RQ/QTR or TL series actuators. These tight shut off type actuated butterfly valves are offered in size range from 50 mm to 1000 mm nb and varied body material. These actuated butterfly valves are tight shut off type.